diff --git a/sh/main.sh b/sh/main.sh
index 087c31b..854a787 100755
--- a/sh/main.sh
+++ b/sh/main.sh
@@ -1,4 +1,5 @@
 #! /usr/bin/env sh
+# main module
 
 # ╭──────╮
 # │ main │